Imagine diving hundreds of metres into the depths on one breath. Now imagine using this ability to tag great white sharks in the least harmful way possible. William uses free-diving to help scientists tag different shark species around the world.
Sawsharks are some of the most threatened species in our seas; protecting them requires good information on where they move and what their populations look like. Jane and Paddy are using a variety of methods to improve our understanding of the conservation status and management of sawsharks threatened by fishing in south-eastern Australia.